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Finding the Fourth Proportional to 231,812.15, 347,768.16 and 71,884.87

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Solution

The fourth proportional to 231,812.15, 347,768.16 and 71,884.87 is: 107,842.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,812.15 : 347,768.16 = 71,884.87 : x
  2. Step 2: Convert to fraction form
    231,812.15/347,768.16 = 71,884.87/x
  3. Step 3: Cross multiply
    231,812.15x = 347,768.16 × 71,884.87
  4. Step 4: Simplify right side
    231,812.15x = 24,999,267,832.75
  5. Step 5: Solve for x
    x = 24,999,267,832.75/231,812.15
  6. Step 6: Final answer
    x = 107,842.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.